Sole-edge-trimming tool



No. 623,7I0. Patented Apr. 25,1899.

F.,M. FURBER.

SOLE EDGE TRIMMING TOUL.

(Application ledOct. 26, 1898.)

(No Model.)

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llNirEn STATES PATENT @Enron FREDERICK M. EURRER, CE HAvERi-IILL, MASSACHUSETTS.

SOLE-EDGE-TRIIVIIVIING TOOL.

SPECIFICATION forming part of Letters Patent No. 623,710, dated April 25, 1899.

Application filed October 26, 1898. Serial No. 694,615. (No model.)

edge and portions of the top and bottom sur.

faces of a boot or shoe sole to simultaneously trim said portions and yieldinglypressed bufling or rubbing blades which project between the teeth of the cutter and are adapted to act on the trimmed surface formed on the bottom or outer face of the sole by the rotary cutter.

The invention has for its object to provide a tool of this class in which the buffer-bladesV shall be free to move in and out without frictional resistance, and thus conform to the thickness of the sole.

The invention also has for its object to provide a simple and effective means for adjusting the buffer-blades.

To these ends the invention consists in the improvements which l will now proceed to describe and claim.

Of the accompanying drawings, formi-ng a part of this specification, Figure l represents a front elevation of a sole-edge-trimming appliance embodying my invention. Fig. 2 represents a section online 2 2 of Fig. l.

The same letters and numerals of reference indicate the same parts in both figures.

In the drawings, ct represents a rotary shaft mounted in a suitable bearing Z9.

c represents the hub of a rotary cutter, which is mounted on the reduced outer portion of the shaft d and secured thereto by'a screw d, said hub heilig provided with blades e', each of which has three cutting edges or portions 2, 3, and 4, arranged in the usual manner for simultaneous action on the edge and on the adjacent portions of the top and bottom surfaces of a sole.

e represents a collar which is formed to closely iit the shaft d and is provided With suitable means for attachment thereto, such as a set-screwf. To the collar e, at or near one end thereof, is joined a shield or guard e2, the collar and shield being preferably cast in one piece. The shield or guard projects from the point where it is joined to the collar e toward the opposite end of said collar and is preferably iiared outwardly, so that its outer end, which is open, is of considerably larger diameter than its inner end. The shield or guard e2 is separated from the portion of the collar e over which it projects by an annular chamber g.

h represents a sleeve which is fitted to slide upon the collar e within the annular chamber g, said sleeve being normally pressed toward the open end of the chamber g by means of a spring i. The outward movement of the sleeve 7L is limited by means of complemental stop members j and j on the sleeve and eollar. One of these members may be a shoulder formed by cutting a peripheral groove in the collar, while the other may be a screw inserted in the sleeve, as shown in Fig. 2.

To the outer portion ofthe sleeve l1, are aflixed a series of buer-blades 7o, which are formed and arranged to project through the open end of the chamber g into spaces between teeth of the rotary cutter. If desired, there may be as many blades 7.o as there are teeth c', so that each space between the teeth will receive a blade lo, or the number of blades may be less than the number of teeth and spaces.

It will be seen that when the cutter is in operation the blades 7o are pressed yieldingly against the bottom surface of the sole and act to smooth the face formed by the portions 4 of the cutting edges of the teeth c'.

The collar e, shield or guard e2, sleeve h, and blade k constitute an attachment which is adapted to be applied and removed as a whole, the shield protecting the hands of the workman from injury by the blades. If desired, the shield may be provided with orifices e3 e3 for the circulation of air and for the escape of chips and cuttings which may find their way into the chamber g.

Heretofore in devices of this character the shield or guard has been rigidly secured to the buffer-blades, so that the friction caused by the rapid rotation of the device and the Contact of the operators hand with the shield causes the buffer-blades to come in Contact with the cutter-blades andbind against the IOO same, so that their inward and outward movement is considerably impeded by friction. My improved construction above described overcomes this objection and makes the buffer-blades very sensitive, so that they readily conform to the thickness of the sole whatever the thickness may be. The collar c may be readily adjusted in the shaft by loosening the set-screw j', thus permitting any7 desired adjustment of the buffer-blades.

l. A sole-edge-trimming appliance couiprising a cutter-shaft, a cutter thereon, a shield having an open end adjacent to the cutter, said shield forming a chamber surrounding the shaft, and a series of springpressed buffer-blades movable in said chamber and normally projecting therefrom between the teeth of the cutter.

2. A sole-edgetrimming appliance comprising a cutter-shaft, a cutter thereon, a `shield adjustably mounted on the shaft and having an open end adjacent to the cutter, said shield forming a chamber surrounding the shaft, a series of spring-pressed bufferblades movable in the chamber, and means for positively secu ring the shield tothe shaft in different positions and thereby adjusting the buffer-blades.

3. The improved sole-edge-trimming-tool attachment hereinbefore described, the same Comprising a collar having means for attachment to a cutter-shaft, a shield or guard joined to the collar at or near one end thereof and projecting toward the other end, said guard being separated from the portion of the collar over which it projects by an annn lar chamber which is open at one end, a sleeve 

